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Which can be written as an infinite sum \begin{equation}  M_{ij}=-\sum_{l=0}^{\infty}\sum_{k=1}^j (-1)^{l}\delta^i_{j+l}P_{k+l}Q_l (-1)^{l}\delta^i_{j+l}P_{k+l}Q(k)_l \\  M_{ij}=-\sum_{l=0}^{\infty}\sum_{k=1}^j \frac{(-1)^{l}}{l!}\delta^i_{j+l}P_{k+l}\prod_i^n(k+i-1)  \end{equation}